Support for saving and restoring live registers in a slow path.
And use it in suspend check slow paths.
Change-Id: I79caf28f334c145a36180c79a6e2fceae3990c31
diff --git a/compiler/optimizing/ssa_liveness_analysis.h b/compiler/optimizing/ssa_liveness_analysis.h
index 33b1f1f..dea6181 100644
--- a/compiler/optimizing/ssa_liveness_analysis.h
+++ b/compiler/optimizing/ssa_liveness_analysis.h
@@ -138,7 +138,8 @@
HInstruction* defined_by = nullptr,
bool is_fixed = false,
int reg = kNoRegister,
- bool is_temp = false)
+ bool is_temp = false,
+ bool is_slow_path_safepoint = false)
: allocator_(allocator),
first_range_(nullptr),
last_range_(nullptr),
@@ -150,8 +151,14 @@
spill_slot_(kNoSpillSlot),
is_fixed_(is_fixed),
is_temp_(is_temp),
+ is_slow_path_safepoint_(is_slow_path_safepoint),
defined_by_(defined_by) {}
+ static LiveInterval* MakeSlowPathInterval(ArenaAllocator* allocator, HInstruction* instruction) {
+ return new (allocator) LiveInterval(
+ allocator, Primitive::kPrimVoid, instruction, false, kNoRegister, false, true);
+ }
+
static LiveInterval* MakeFixedInterval(ArenaAllocator* allocator, int reg, Primitive::Type type) {
return new (allocator) LiveInterval(allocator, type, nullptr, true, reg, false);
}
@@ -163,6 +170,7 @@
}
bool IsFixed() const { return is_fixed_; }
+ bool IsSlowPathSafepoint() const { return is_slow_path_safepoint_; }
void AddUse(HInstruction* instruction, size_t input_index, bool is_environment) {
// Set the use within the instruction.
@@ -480,6 +488,9 @@
// Whether the interval is for a temporary.
const bool is_temp_;
+ // Whether the interval is for a safepoint that calls on slow path.
+ const bool is_slow_path_safepoint_;
+
// The instruction represented by this interval.
HInstruction* const defined_by_;